Here is another example of software you can use to create podcasts. Profcast is a Mac-only product ($35) that can be used to convert a PowerPoint or Keynote presentation into a podcast. The slides are embedded within the podcast and appear within the “album art” window of iTunes.
The link provided below will download a sample I have created. This “podcast” will open within iTunes. If you have Quicktime player loaded on your system, you might also right click on this link and download the file. The file can then be opened and played within Quicktime. If you try this second technique, you will find that you can expand the “slides” to their original size.
The social bookmark site I describe in this example is also available for examination.